API PRICES
OpenAI · gpt-5.1
Provider prices, cheapest first
Price comparison
- Official (cash)
- Input 1.25 / output 10 USD/million tokensOpenAI ·
- Lowest inference provider (cash)
- Input 1.25 / output 10 USD/million tokensOpenRouter · Aggregator · same as official ·
- Lowest relay (credit)
- 3.4375 USD credit/million total tokenssg.uiuiapi.com "default" ·
Official and inference-provider prices are cash; relay prices are site credit (USD credit or CNY credit), a different unit, compared separately. Relay prices are per million total tokens at 75% input and 25% output.
OpenAI · gpt-5.1 official price: input 1.25, output 10 USD per million tokens (OpenAI, observed 2026-10-17). Cheapest inference provider: OpenRouter, input 1.25, output 10 USD per million tokens. Cheapest relay: sg.uiuiapi.com, group "default" 3.4375 USD_CREDIT per million total tokens (credit price, not cash, observed 2026-10-16). 100 sites have comparable prices; 177 sites list this model.Relay blended price uses 75% input and 25% output.
Price ranges per million tokens
Official cash prices · Lowest 3.4375 · median 3.4375 · highest 3.4375 · 1 quotes USD / per million tokens
Inference provider cash prices · Lowest 3.4375 · median 3.4375 · highest 3.4375 · 1 quotes USD / per million tokens
Relay USD credit prices · Lowest 3.4375 · median 10.313 · highest 23.203 · 7 quotes USD / per million tokens, site credit
Official price
| Provider | Input | Output | Cache read | Cache write | Unit | Observed | Conditions and source |
|---|---|---|---|---|---|---|---|
| OpenAI | 1.25 | 10 | 0.125 | — | USD / 1M tokens | Official source |
Official prices are the vendor's cash prices. Inference providers also list cash prices and can be compared directly. Relays list prices in site credit; what you actually pay depends on each site's top-up rate, so they cannot be compared with official prices directly.
Inference providers
| Provider | Input | Output | Cache read | Cache write | Unit | Observed | Conditions and source | vs official |
|---|---|---|---|---|---|---|---|---|
| OpenRouter · Aggregator | 1.25 | 10 | 0.125 | — | USD / 1M tokens | Official source | Input 0% · Output 0% |
Unit: USD credits per 1M tokens. These are site-credit prices; actual cost depends on each site’s top-up rate.
Price range: lowest 3.4375 · median 10.313 · highest 23.203 (7 quotes, USD credits per million total tokens)
Relays
Prices below are in site credit, not cash.
| # | Provider | Plan / conditions | Input ↑USD credits / 1M | Output USD credits / 1M | Cache readUSD credits / 1M | BlendedUSD credits / 1M | Details |
|---|---|---|---|---|---|---|---|
| Recent price | |||||||
| 01 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | default ⭐ Default (mixed channels) | Azure + official models [machine translation]Original: ⭐ 默认（混渠道）| Azure + 官模型 Operator pending verification | 1.25 | 10 | 0.125 | 3.4375Median price ÷ this price: 3× | Full prices and sources |
| 02 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | 🚀OpeniAI-VIP 🚀OpenAI/premium quality-official special-price channel | *1.5 [machine translation]Original: 🚀OpenAI/优质-官特价渠道 | *1.5 Operator pending verification | 1.875 | 15 | 0.1875 | 5.1563Median price ÷ this price: 2× | Full prices and sources |
| 02 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | 🚀OpeniAI-VIP Name on site: gpt-5.1-high 🚀OpenAI/premium quality-official special-price channel | *1.5 [machine translation]Original: 🚀OpenAI/优质-官特价渠道 | *1.5 Operator pending verification | 1.875 | 15 | — | 5.1563Median price ÷ this price: 2× | Full prices and sources |
| 04 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | AZ-T3-Openai Name on site: gpt-5.1-high AzureGPT models have higher stability [machine translation]Original: AzureGPT模型稳定性更高 Operator pending verification | 3.75 | 30 | — | 10.313Median price ÷ this price: 1× | Full prices and sources |
| 04 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | AZ-T3-Openai AzureGPT models have higher stability [machine translation]Original: AzureGPT模型稳定性更高 Operator pending verification | 3.75 | 30 | 0.375 | 10.313Median price ÷ this price: 1× | Full prices and sources |
| 06 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | 🔥AI-SVIP 🔥 (officially signed contract) stable, smooth use | top-spec models | *6.75 [machine translation]Original: 🔥 (官签合同) 稳定畅享 | 顶配模型 | *6.75 Operator pending verification | 8.4375 | 67.5 | 0.84375 | 23.203Median price ÷ this price: 0.4× | Full prices and sources |
| 06 | sg.uiuiapi.comAsk or discussCollected: Collected this cycle View 7 plans | 🔥AI-SVIP Name on site: gpt-5.1-high 🔥 (officially signed contract) stable, smooth use | top-spec models | *6.75 [machine translation]Original: 🔥 (官签合同) 稳定畅享 | 顶配模型 | *6.75 Operator pending verification | 8.4375 | 67.5 | — | 23.203Median price ÷ this price: 0.4× | Full prices and sources |
Special groups · 1 rows · not ranked
These plans are marked as test, internal, disabled, gated by top-up or membership, or have a near-zero ratio. They may not be purchasable or stable, so they are listed separately and left out of the ranking and statistics.
- test or debug group: 1 rows
- test-api.apiqik.online · openai · gpt-5.1 · Input 0.375 / Output 3 USD credits / 1M
Related variants · 20 rows · not ranked
These are special editions of the model (thinking, max, search, batch, long context, free, etc.). They are priced differently from the base model, so they are listed separately and not ranked. Names that only add an effort level such as low, high or nothinking are compared with the base model.
- gpt-5.1-thinking (-thinking · thinking edition): 20 rows
- ai.comfly.org · vip · gpt-5.1-thinking · Input 1 / Output 8 USD credits / 1M
- ai.t8star.org · vip · gpt-5.1-thinking · Input 1 / Output 8 USD credits / 1M
- api.bltcy.ai · vip · gpt-5.1-thinking · Input 1 / Output 8 USD credits / 1M
- api.bltcy.top · vip · gpt-5.1-thinking · Input 1 / Output 8 USD credits / 1M
- kg-api.cloud · vip · gpt-5.1-thinking · Input 1 / Output 8 USD credits / 1M
- one-api.bltcy.top · vip · gpt-5.1-thinking · Input 1 / Output 8 USD credits / 1M
- ai.comfly.org · default · gpt-5.1-thinking · Input 1.25 / Output 10 USD credits / 1M
- ai.t8star.org · default · gpt-5.1-thinking · Input 1.25 / Output 10 USD credits / 1M
- api.bltcy.ai · default · gpt-5.1-thinking · Input 1.25 / Output 10 USD credits / 1M
- api.bltcy.top · default · gpt-5.1-thinking · Input 1.25 / Output 10 USD credits / 1M
How this ranking works
All per-token prices: 97,455 prices from 871 sites (about 765 companies). 89,631 are ranked, from 861 sites (about 755 companies); 7,824 more are listed separately and not ranked. Prices collected up to 2026-10-17.
This model has 792 recorded prices; 375 can be compared directly (352 ranked, 23 listed separately). Not comparable yet: price not parsed yet 265, scope of the official doc price not confirmed 60, ratio looks unset 40, tiered by rules (see Tiered prices) 23, display unit not confirmed 14, billed per request or another unit 3
7 recent · 0 stale (older than 10 days, or not updated by this refresh) · 0 unverified timestamps. Minimum and median only count recent paid prices; older prices stay in the table. 0 zero-valued pairs are separately unverified, without proof of free eligibility. Timing does not verify payment, upstream identity or quality.
Prices are converted to site credits using each site’s published ratio. What you actually pay depends on its top-up rate. Input, output and cache prices in each row come from the same plan. Several sites run by the same company take one place in the ranking: its cheapest plan, with the other sites listed under it. We judge “same company” by identical prices, status pages or homepage code; this is not a legal finding. To see every site’s prices, choose “All plans” or filter by provider.
“Self-declared unofficial channel” means the plan name itself says “reverse-engineered” or similar. We have not verified their source or quality. Minimum and median only count regular plans.
Sources not accepted this cycle and reasons
FAQ
Which API is cheapest for OpenAI · gpt-5.1?
sg.uiuiapi.com, group "default", 3.4375 USD credit per million total tokens, observed 2026-10-16. 100 sites have comparable prices.
What is the official price for OpenAI · gpt-5.1?
Input 1.25, output 10 USD per million tokens, checked 2026-10-17. Lowest inference provider: OpenRouter, input 1.25, output 10 USD per million tokens. Input 0% higher than official.
How do I use OpenAI · gpt-5.1 in Claude Code or Codex?
Install Grandet Skill, then say "Connect the cheapest OpenAI · gpt-5.1 API to Claude Code for me". Install Skill →